Fix monitoring TG CI lint issues

.gitea/workflows/ci.yml

@@ -24,7 +24,4 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
-        with:
-          python-version: "3.11"
-      - run: python -m compileall src alembic
+      - run: python3 -m compileall src alembic

cmd/server/main.go

@@ -1028,7 +1028,11 @@ func (a *app) serveMinioMedia(w http.ResponseWriter, r *http.Request, key string
 		slog.Warn("minio_get_media_failed", "key", key, "error", err)
 		return false
 	}
-	defer obj.Close()
+	defer func() {
+		if err := obj.Close(); err != nil {
+			slog.Warn("minio_media_close_failed", "key", key, "error", err)
+		}
+	}()
 	info, err := obj.Stat()
 	if err != nil {
 		return false